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Finding the Fourth Proportional to 369,245.88, 509,729.40 and 216,262.80

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Solution

The fourth proportional to 369,245.88, 509,729.40 and 216,262.80 is: 298,542.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,245.88 : 509,729.40 = 216,262.80 : x
  2. Step 2: Convert to fraction form
    369,245.88/509,729.40 = 216,262.80/x
  3. Step 3: Cross multiply
    369,245.88x = 509,729.40 × 216,262.80
  4. Step 4: Simplify right side
    369,245.88x = 110,235,507,286.32
  5. Step 5: Solve for x
    x = 110,235,507,286.32/369,245.88
  6. Step 6: Final answer
    x = 298,542.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.